全空气空调下建筑室内空气污染物浓度变化规律

摘要

建立了全空气空调系统室内污染物扩散模型，模拟分析了新风量、室外污染物浓度、新风过滤效率和回风旁通系数对室内污染物浓度的影响规律。研究表明，一次回风方式存在着一个临界新风过滤效率，只有大于该临界效率时，增加新风量才能减少室内污染物浓度。%A diffusion model for indoor pollutants of all air conditioning was built. The effects of fresh air, outdoor pollutants concentration, fresh air filtration efficiency, and return-air's by-pass coefficient on indoor concentration distribution were discussed. The result shows that primary return air has critical filtration efficiency.